package cn.hackcloud.designpattern.facade;

public class Screen {
	private static Screen instance = new Screen();

	public static Screen getInstance() {
		return instance;
	}
	public void on() {
		System.out.println("Projector is on");
	}
	public void off() {
		System.out.println("Projector is off");
	}
	public void focus() {
		System.out.println("Projector is projector");
	}
}
